Portable extensible conveyer



May l, 1923.

J. JESSEN PORTABLE EXTENSIBLE CONVEYER Filed May 14, 1920 e Sheets-sheet l May 1, 1923. 1,453,393'

J. JESSEN PORTABLE EXTENSIBLE CONVEYER Filed May 14 1920 6 Sheets-Sheet 2 HIS HTTO//VEYS may 1, 1923.

J.JESSEN PORTABLE EXTENSIBLE CONVEYER Filed May 14 6 Sheets-Sheet 4 May l, 1923.

J. JESSEN PORTABLE EXTENSIBLE coNvEYER Filed May 14, 1920 Mayl, 1923.

J. JESSEN PORTABLE EXTENSIBLE CONVEYER Filed May 14, 1920 6 Sheets-Sheet 5 /A/ VEN 70 E NE s JESSE/v B Y-J /f/s /z Troma/E ys May 1, 1923.

1,453,393 J. JESSEN PORTABLE EXTENSIBLE CONVEYER Filed May 14, 1920 `6 Sheets-Sheet 6 /Nl/E/VTOR r 'cj/q ESUESSE/ BY@ H/S /VTT'OR/VE Patented May 1, 1923,

yUtil?El? STATES J'ABCES JESSEII, OF MNNEAPOLS, MNNESOTA.

Massai raient `risica.lv

PORTABLE EXTENSIBLE CONVEYER.

Appneatio'n filed May 14, i920. 'serial No. 381,410.

ers for loading railroad boX cars with filled bags or packages, boxes7 crates or any similar articles and also Jfor loading grain, coal orother loose material. ln loading railroad or similar box cars and especiallyl when employingV elevators or power conveyers to deliver the loadingmaterial to the car, a great deal ot labor is required to move the material or goods from the centrally located entrance of the car to both ends of the car and that as the loading proceeds to the cen-A ter oi' the car much ot" tlielabor so employed becomes superfluous and idle till the car is completely loaded and the loading of a tresh car begun. T his naturally results in a great deal ot' labor waste, ineiciency and expense f and the object of my invention is therefore to provide a motor driven portable and compact conveyor that may be `placed inside the door of a car and readily extended to carry the articles or material to the ends ot the car and as the loading; is progressing may be as readily and quickly contracted towards the center of the car. particular object of the iuventionis to provide a conveyer ol the above description that is capable of coni'feyingi` large and heavy packages of flour, grain andthe like as well as small light articles andthat will be light of weight, compact and simple ot construction and may be easily handled b v one or two meu. @ther objects will appear vfrom the following detailed description in connection with the accompanyingr drawings.

My invention consists generally in various constructions and combinations, all as hereinafter set forth and particularly pointed out in the claims.

In the drawings. lligijure 1 is a longitudinal vertical section ot' a conveying` apparatus constructed according to my invention and showing the machine in a contracted form.

Figure 2 is a vertical transverse section on the line ot' Figure l.

Figure is a siinilar section on the line .Qt .sure t Figure .Il is aA plan view partly in section onv the line 4 4 oit Figure 5. Figure is a lo-ngitudii'ial line of Figure 4. y

ligriiire 6 a side elevation of the conveyer showing` it in a partly extended' form on a smaller scale. f

Fiiure 7 is detail section on the line'f of? Figure 8 illustrating the method rif-ex?` tendine'` the conveyer.

1. Q L' lligure 8 is a sectiononthe line 88 o Figure 7. y Figure 9 is of Figure' l.` y

ll1 ioure l() is a sectional view onv they line n i lO--flOvo't Figure i Figures li and llaL are detail views.r

a crossfsection on `the line 9*-.9

(ilrawing's 12 representsthe lower side frame meml ers of the apparatus carrying the castor vlieels 13 in swiveled ball` bearing brackets ll, and l5 the lower end cross mem'- f bers ot a 'frame which is preferably constructed in box form, of angle bars, '16 and i6-1 are the vertical cornerA members or posts connected bv uo ier cross Qirders 17 and 17 The corner posts lo are preferably somewhat shorter than the posts 16 and inclined upper side bars l1B are secured to the corner posts lo and lo making of the 'trame a rigid rectangular unit. 4

mounted on a wooden plank 20 supported upon a cross bar 2Oa and the rear cross bar l5. This motor may be either of theelectric or internal combustion ltype and is provided with a driving pulley 2l. Frame brackets and 22a (see also Figure l0) are rigidly secured to the upper and lower side members ot the frame and .a main driving sha-it 23 is mounted in these brackets and is provided with a gaulle;7 which is driven. by a'suitable belt from the motor pulley 2l. The shaft 23 has ing' with a` gear 26 on a' secondary drivingr shaft 27. All ot these shafts and a' shaft 29 together with a tier of pulleys' 30 are mounted in bearings in the frame brackets` 2 2 and 2J.' The upper two pulleys 3l and 32 are driven 'from the shaft 27 by means ot gears 33 and Bil mounted ou the pulleyshaits 35 and 36 and meshing` with a gear B'r'fon the shalt 2'? (see Figure l0). y

Another tier of pulleys 39 are jo'urnaled in horizontally eleva. e or trave lis ,fraaie section onv the fi motor 1 9 tor driving,- the conveyer isr a pinion 25 (see Figi 6') mesh` lll members and 40a, supported on Worm shafts 4l and 42. These shafts are mounted in bearings 43 and 44 on the corner posts 16'L and bearings 43a and 44a onr the frame brackets and 22a. The frame members 40 and 40n are rigidly connected by cross bars 40 and 4l" (see Figure l) and are provided with housings 40C and 4l. in which are arranged internally threaded nuts 45 held in place by threaded caps 46 and engaging the threads ot the Worin shafts 4l and 42 (se-e Figures l0 and ll). Bevel gears 47 and 4Tn on the uorin'shatts 4l and 42 mesh with bevel gears 46 and 4F*L on the shaft 29, by means ot which the Worm shafts 4l and 42 will be revolved. simultaneously to move the pulley trames 40 and 40a.

5 rlhe extensible conveyer consists of the tiltable trame section composed of channelbars 50 and 5Ga pivoted at 5l to the :traine 'brackets 22 and 22a (see Figures l and 10) and forming the supporting 'frame for a series oit telescopin'g trame sections 52, 53 and 54, the inner one 52 carrying a head pulley 55, Flach of these frame sections is composed of tivo channel bars yfirmly secured together by upper sheet steel strips or plates 56 and lower plates 57. The channel bars are ol' increasing height from theI inner bars 52 to the outer main bars 50 and 50, and the connecting strips overlap accordingly, forming a telescoping frame rectangular in cross section as shown particularly in Figure 9. rlhe frames are supported on each other and caused to telescope freely by means of the outer rollers 58, 59 and 60 and inner rollers 6l, 62 and 63 secured to the smaller inward channel bars and tting tol run freely in the channels orn the larger outward channel bars, with the upper and lower frame plates 56 and 57 not contacting each other as shown plainly in Figure 9.

Stop lugs 64 are fastened to the channel bars at their Jtorward ends with which the rollers 58, 59 and 60 contact When the trame sections are extended and stop lugs 65 are secured at the rear channel ends against which the rollers 6l, 62 and 63 stop When the trarne sections are entirely telescoped,

Referring now again to Figure l, the upper pulleys 3l and constitute the drivers for the conveyer belt 66 and this belt runs from the upper pulley 3'1 around the upper pulley 39a ot the tier of pulleys 39 on the traveling or compensating pulley trames 40 and 40".y thence around the second driving pulley 32, thence forth and back between and around the ren'iaining traveling pulleys 39 and fixed pulleys 3() thence under an idler pulley 30a' upwards over another idler pulley 30h and around a head pulley 66 mount- .ed on the supporting iframe sectionsD over the telescopic frame sectionsand around the pulley ,55 back to the driving pulley 3l. When the conveyer .frame is closely tele-C scoped as shown in Figure l, the compensatingor traveling pulley trames 40 and 40a are in the forward position on the Worm shafts 4l and 42 as in Figure 1 and the channel rollers 6l, 62 and are bearing against the stop lugs 65 as in Figure 4, the conveyer belt 66 being under running tension. As the conveyer frame is extended the Worm shafts 4l and 42 are revolved to move the compensating pulley frames 40 and 40a proportionate distance to keep the belt 66 under tension as indicated in Figure 6. The distance the pulleys 39 must travel to compensate for the travel of the outer conveyer pulley 55 depends on the number oi pulleys 30 and 39, but as shown with a ratio oft five compensating pulleys to one conveyer pulley, a distance oi one fifth will be traversed. by the traveling pulleys relative to the distance traveled by the outer conveyer pulley 5 lt is practical to move the telescopic conveyer frame sections by lhand independent o'l the travel of the compensating pulley :trames and suitable stop locks 67 may be provided to lock the frame sections in any desired position against the tension of the belt 66 as shown in Figure lla, but I prefer to provide means for simultaneously telcscoping the conveyer frame sections and nio-ving the pulley frames 4() and 40FL an eX- act proportional space to constantly keep the conveyer belt 66 at the proper tension and at the saine time loc-k both the conveyer frames and pulley frame sections at any desired point during the loading of the car.

To this end toothed racks 70 (see Figures 2, 5 and 7 to 9)' are fastened to the channel bars 52, 53 and 54, and a series of gears 7l meshing With the racks 70 are mounted on an adjusting shaft 7 2 which has bearings in the supporting conveyer channel bars 50 and 50- and is provided with an operating handle 73 and a sprocket Wheel (4. er chain 'T5 runs from this sprocket vvheel 74 lto a sprocket Wheel 76 on a shaft 77 concentric to the supportingv pivot point of: the conveyer trame and a second chain 'T6 (sec Figures l and runs 'from a.. sprocket Wheel 79 on the shaft 7T to a sprocket Wheel 6 'l on the shail't 29. This sha1 t as above described opcrates the Worm shafts 4l aud 42 by means of' the bevel gears 46; 46, 4T and 47 and when therefore the adjusting slur-'ft T2 is turned to more the telescoping conveyer traine sections. the Worin shafts 4l and 42 will .be revolved' at the same time. lt is evident that the inner trame section carrying the conveyer pulley 66 must be moved the entire adjustable distance ol' the con veyer, which is iuuch longer than the length ot this trame and that therefore a shifting interlocking` device must be interposed be-l of tlfelV intermediate: tieni@ sections "53 'and When thefrjollers 5S' etk the inner-1 frame section 521s6i-iketliestop lug 64 ofthe freine which ie feetened te the supporting 'channel bei# 50,'ehd1not'rnally dep'reeeeerthe catch. 84

ont of 'they paisl ofthe lii'gs A81.1 (See 5) Ae th'efshetil eoieitinueeteI revolve the rack 70arr et the inner. eonveyeilfreine section 52 disengegeell fiom' th'e'geer 71, but the 82`entl lng' Si. Aetheeeeond treme sectie-r1 Cil tien'Qwith itiin'til itzsirelleitfsl es the stop lug'.fi-'ofth'efthitl freine'eeetion- 54e the seineoperation is' feeete'd 'tereiiteeiiloehihg thefemefs'eetioe ffah'dft and shittingthefgezitf end'feck eonineetion from Athe fteihe section 53 to the-"fname seetien When tliie'"letter freine section is also extended, ce'fying both the fianiefeeetions enel' 53 iiji'th iste thewlirnfit of extension, eind -i'i'lhile the'gieet 71fisin=meeh with the 'mele *10e-the roller 60 strikes 'the-stop' luge 64 of the outer supporting channel here 5o and 5011i; preiventing' ttfthetextension; y

The compenetfin 'pulley ftnneefflO' and me lieve imeen'wh'iletreilede fji'opertion'ete distnce 'toivnrle-theii'ed pulleys' 30 hy' the coop'eieto'n 'of*thetrenemieeien dei-ice heretoL fore desclfibed, the ratiolf'th gringzin'd thtedl pit-ch" of: the wenn "ehefte 41' and 4-2 heinqfe'djsted to th'eieeetftio vfor'"thefpiopoftionte movement-ofthe eonv'ey'ei pulley 55'entl ltteuvel'ing;` ptilleye -39 'te keep Vthe belt, olif-ati the' prepeffte ion. In'. pife'etice' the cfonweyer myfbe-eitenclec'l' or connected any (leen-eel point, to faciliteitetthie'woifk h 'v tiiujniii'gith'e handle-73 and a 'loc infgboltg 86',

be provided in the handle oflthe edjueting. lever 73 for keeping theconveyei1 teni'efsee; tiene in .place egeins'tfth'e tension et thfevbeltg or'tcle'copcd by trnin'g'tlic Veed-justing lever 79:

`in ythe opposite direction from they arrow n the conveyor instead of the pulleys 39 or both series ol' pulleys 30 and 39 may be made to more in opposite directions When the conveyer trame is adjusted and various other details oit construction modiied to suit varying conditions.

claim as my invention:

l. An extensible and contractible conveyer comprising a main frame, a telescoping conveyer frame mounted on said main frame, an endless belt operating over said conveyer trame, movable pulleys,ovcr which said belt travels, mounted on said main frame, said pulleys moving a linear distance inversely proportional to the number of moving pulleys and the distance said conveyer trame travels when telescoped to maintain an even tension of said belt.

2. An extensible 4and contractible conveyer comprising a main frame, a telescopingconveyer frame mounted on said mai: frame, an endless belt operating over said conveyer frame, pulleys over which said belt travels mounted on said main traine, some of said pulleys being driven and means for moving said pulleys a shorter linear distance than said conveyer frame, said distance ,being inversely proportional to the number or1 moving pulleys formi-iintaining` an even tension of said endless belt When the said conveyer frame is telescoped.

3. An extensible and contractible conveyer comprising a main trame, a series oi telescopinri; conveyer iframe sections mounted upon said main frame, an endless belt t-raveling over f said conveyer trame section, means for telescoping said trame sections 'one Within the other successively to vary the length of said belt, movable pulleys mounted in said main frame over which said belt also travels and means for moving; said pulleys to take up and maintain an even tension of said belt When'tbe said conveyer frame sections aretelescoped.

' 4. In an extensible conveyer the combination With a telescoping'conveyer trame and a portable main frame upon which. said conveyer frame is mounted, said main trame having` roller units arranged in spaced relationship thereunder, or a non-rolling' jack member mounted adiustably iu said main frame adjacent to one of said roller units, means for vertically adjusting said. jack member Withrespect to said main trame and tiltingsaid frame upon the opposite roller unit thereby transferring; support ot said iframe from the first named roller units to said jack member, adjusting; said conveyer vertically and preventing rolling; movement of said trame.

5. ln an extensible and contfactible conveyer, the combination with a main supportingframe, ot a supporting conveyer frame section pivotally connected to said -main supporting trame, a plurality of telesconing traine sections adinet-ably connected to said supportingconveyer framesection, a driving` pulley mounted in said main supporting` trame, headpulleys mounted at the rea-r end of said supporting conveyer frame :tion and the forward end ot one of said telescoping conveyer trame sections, tiers of pulleys spaced apart and mounted upon said main supporting ramean endless carrying belt passing` around said driving pulley, said head pulleys and backwards and for- -wards around said tier pulleys,l and cooptake up means on said main iframe includ` ing traveling1 and tixedpulleys `for maintaining` an even tension on said carrying belt When said conveyer frame is extended.

7. ln an extensible and contractibleconveyer, the combination with aV main supporting` iframe and a supporting conveyerv 'frame section connected thereto, of avplu'- rali-*gv ot telescoping` conveyer 'frame' sec'- tions adjustably connected to said supporting conveyer "frame section, a driving pulley and amotor mounted in said main supportingF frame, means for driving said pulley by said motor7 head pulleys mounted at the ends of said supporting and said telescopinn` conveyer frame sections, a fixed tier of pulleys rotatably mounted upon said main supporting frame, a compensating tier of pulleys arranged mo'vablyupon `said main iframe, an endless carrying;- belt passing around saiddriving' pulley, said head pulleys, land said fixed and movable tier pulleys and means cooperating with said compensating tier pulleys, and said -telescoping conveyer ifrance sections tor automaticallv moving` said frame sections fory automatically moving said compensating tier pulleys to preserve a substantially even tension of said carrying belt when said conveyeriirame sections are adjusted. An extensible and contractible conveyer traine, comprisingv an outcr'supporting); rectangular iii-ame sect-ion carrying a pulley vand an intermediate frame section, telescoping .in said supporting trame section, an inner 'traine section also carryingr a pulley andtelescopin'g in said intermediate trame section, roller supports connected'to said inner frame section and a receiving sheltnivcted to said ame sectolls 9. In an extensible and contractible con veyer the combination of a series of telescoping conveyer frame sections, stops on said frame sections to limit the telescoping movement of said frame sections, an endless belt traveling over said conveyer frame sections, a main trame on which said conveyer frame sections are mounted, pulleys on said main frame over which said endless belt travels and means cooperating with said pulleys to maintain an even tension of said belt when said conveyer frames are telescoped. j

10. In an extensible and contractible conveyer the combination with a main trame ol" a series of telescoping conveyer frame sections, stops on said frame sections to limit the telescoping movement of said frame sections, toothed racks on said frame sections, a shaft mounted on one ot said conveyer frame sections, gears on said shaft meshing with said toothed racks, an endless carrying belt traveling over said conveyer trame and means mounted on said main frame operating to maintain an even tension of said belt when said conveyer frame sections areltelescoped.

11. An extensible and contractible conveyer frame comprising an outer supporting channel bar frame section carrying a rear- Ward pulley and a forward stop, an intermediate channel bar frame section, carrying rearward rollers projecting into the channels of said supporting conveyer trame section and being provided With a forward stop and a latch dog, an inner frame section carrying a forward pulley, rearward rollers Vprojecting into the channels of' said intermediate frame section and a lug for'engaging said latch dog, means cooperating with said lug and said latch dog for automatically locking said inner and intermediate frame sections together when said frame sections are extended. l

12. In an extensible and contractible conveyer the combination with an outer supporting conveyer trame section, of an inner and an intermediate conveyer frame section, telescopingly connected to said supporting conveyer trame section, toothed means for telescopingly adjusting said inner and intermediate conveyer frame sections and means for automatically locking together and unlocking said inner and intermediate frame sections When said sections are adjusted.

13. In an extensible and contractible con-y i matically putting said gears in alternate' mesh with said toothed racks when said inner and intermediate frame sections are ad justed. y

14. In an extensible and contractible con# veyer, the combination with a main frame and an outer supportingconveyer frame section pivotally connected to4 said main frame,

oi inner and intermediate conveyer frame sections telescopingly connected to said supporting conveyer frame section, `forward and rear stops'l arranged in said conveyer 'frame sections to limit the-telscoping movement of said inner and intermediate frame sections, geared means actuating to extend said conveyer frame sections `and means for successively locking-said inner and intermediate frame sections together, and causing said geared means to successively actuate said innerv and intermediate conveyer frame sections wheny said conveyer frame sections are extended. i j

In witness whereof, I have hereunto set my hand this 12th day of May, 1920.

JAMES JEssEN. 

